1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4b90d8ba76e399a8edf7412ff99e5258702fdc3b53093d8de9b27548bfc5d39. Chain 2 (Bitcoin): anchored in block 953641 (2026-06-14T13:54:28Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/39f77105-7bcb-41b6-ba2a-ca90fade0ac3.json and https://artists.proofprofile.net/proofs/artist/39f77105-7bcb-41b6-ba2a-ca90fade0ac3.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
上海灘 無綫電視劇集『上海灘』主題曲
1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6fbaacaa9fcad81cac7a82590c5802e245d61c17586ee46c7b491b00bf154cc. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKC630300721.
說天說地說空虛 無綫電視劇集 『天地豪情31集後』主題曲
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf53781601f63ad2371a076eefde116eaf8de9f191bac135bbcd2d0542e1d6c0. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKC631003544.
仍然在痛 無綫電視劇集『天地豪情首30集』主題曲
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c449b2d947f04d5cc3a8108f80075d46ed99bcb793a91a7ed4f1dc5a5d47afc. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKC631003543.
勝利雙手創 亞洲電視劇『我來自潮州』主題曲
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43f0ce286afb64c6738c0ebbd16d1f1382c8e765c7b1779665b5b9efa001de10. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKC639722701.
舊夢不須記 電影『舊夢不須記』主題曲
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa04a9d7d519e702b189a69b484974ea44c39e28909f6cff02df01b17a120726a. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKC631003406.
少女慈禧 麗的電視劇『少女慈禧』主題曲
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d79fdd938b44bd296f0cedd927121faa75c6713f24bc1dc3d33345071a5b5ab. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKC630902821.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94437d9128478b9d72514e64e06f7640137daa869d4da0e62d2d66525a9827c7. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKD250613011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a7e431c8845b3b1916d7a5766026b5c2a59538781feb0f98ccb04011bb58570. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKC630702294.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf786db426138ce7dec3f079882f801480ec81727fd378d18f6500706dae9a316. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKJ309100001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0da5061fea5c07568630cc06f0f07563228f7e4a8c3a6aaf31a47ec2137d7ae9. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKH580370101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc27dcf20639a32e32dcf4636acef3132a7360db7eaa3b163603d8caed6a3b976. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKC630702297.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecabe612fa9672c4aef9dfd5bd48b630d2736495b32e461f5e570535b6d3e2da. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKB129903011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb132fb3baaf2769b91602fbbf5fb47b4ae6804d4ae232effc7d4782ad5f90470. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKC630702254.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62369fed79966848733408dae94b53f58380cc62fca56c0a6e37c8407bcb8d72. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKD250613003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe411fa837cf2574c8c0ca0280c3e5233087871354fa9703176ece6632858cdb3. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKC631003555.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94437d9128478b9d72514e64e06f7640137daa869d4da0e62d2d66525a9827c7. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKD250613011.